Description
Overview:
The Oregon 77-303-1 is a genuine spark plug for small petrol engines used in garden and construction machinery. Built with a durable ceramic insulator, plated steel shell and a copper-core centre electrode with a nickel ground electrode, it delivers a strong, consistent spark for reliable starting and clean running. It replaces popular references RC12YC, RC14YC, BCPR5ES, FR8DC and FR9DC, making it a practical choice across many Briggs & Stratton and Kohler CH/CV OHV engines. Typical dimensions are a 14 mm thread, 19 mm reach (3/4 in) and a 16 mm hex (5/8 in) for easy installation with a standard plug socket. Suitable for equipment such as the Briggs & Stratton 16 HP and Kohler CH18, it supports dependable performance in professional and domestic use.
Key Features:
- Genuine Oregon part for dependable fit and performance
- Replaces RC12YC, RC14YC, BCPR5ES, FR8DC and FR9DC for broad compatibility
- Resistor design helps suppress electromagnetic interference on modern equipment
- Copper-core electrode for efficient heat transfer and consistent ignition
- Robust ceramic insulator and corrosion-resistant plated shell for long service life
- 14 mm thread with 19 mm reach (3/4 in) suits many OHV small engines
- 16 mm hex size (5/8 in) for straightforward fitting with a common socket
- Supports smooth starting, stable idle and reduced fouling when maintained correctly
- Suitable for regular service intervals; set gap to the engine manufacturer's specification
- Reliable choice for both professional workshops and home users
Typical Applications:
For walk-behind mowers, ride-on lawn tractors, garden tractors, chipper/shredders, scarifiers, generators, tillers and pressure washers using compatible Briggs & Stratton or Kohler engines. Commonly found on equipment such as Al-Ko ride-ons and GreenMech compact chippers where a 14 mm thread and 19 mm (3/4 in) reach plug is specified.
Also known as:
Small engine spark plug, mower spark plug, lawn tractor spark plug, generator spark plug, petrol engine plug, replacement plug for RC12YC/RC14YC, NGK BCPR5ES equivalent, Bosch FR8DC/FR9DC equivalent, resistor spark plug.
Fits Models:
104700, 11.0HP CH11, 111B5, 115400 Series, 117400, 12.5HP CH12.5, 121600, 13.0HP CH13, 138400, 13C, 14.0HP CH440, 14.0HP CV14, 1450 Series, 15.0HP CH15, 15.0HP SV470, 16.0HP CH16, 16.0HP CV460, 16.0HP SV480, 16.5HP CV465, 161400, 16C/C AWD, 17.0HP CV17, 17.0HP SV530, 18.0HP CH18, 18.0HP SV540, 185400, 19.0HP SV590, 20.0HP CH20, 20.0HP SV600, 21.0HP SV610, 22.0HP CH22, 22.0HP SV620, 23.0HP CH23, 23.0HP SV720, 24.0HP SV725, 25.0HP CH25, 25.0HP SV730, 26.0HP CH26, 26.0HP SV735, 27.0HP CH740, 27.0HP SV740, 28.0HP CH745, 28Q700, 28S700 Series, 294400, 294700 Series, 3.5HP 93400, 3.5HP XT-6, 30-15, 30-17, 30.0HP CH750, 3015, 3017, 303400, 303700 Series, 350400, 350700 Series, 351400, 351700 Series, 35HP93400, 380400, 380700, 380ZX, 386400, 386700 Series, 4.5HP XT-7, 460ZX, 461ZX, 4800BRV, 5 H model, 5 M model, 5.0HP CH5, 5200BRV, 540ZX, 541ZX, 550E, 550EX, 575EX Series, 6.0HP CH6, 7.0HP CH270, 7016RT, 750 Series, 750EX Series, 825, 850, 850E, 875 Series, 875EX Series, 9.5HP CH395, 900 Series, 950E, 99700, Agria 2500 Hydro, Agria 3000 F 1651 B, Agria 5900 Bison, Agria 800 MH 85, Al-Ko 4700BRV, Al-Ko MH5060, Al-Ko T13-82S, Al-Ko T18-102HD, Al-Ko T850R, Allett RM34, Alpina Crono 360G, Alpina One 63Y, Alpina One 98Y, Arborist 15-23, B&S Intek, Briggs & Stratton 1350, Briggs & Stratton 450E, Briggs & Stratton 500E, Briggs & Stratton 700, Briggs & Stratton 700E, Briggs & Stratton 800, Briggs & Stratton 800E, CH14, CH18, CH20, CH22, CH25, CH5, CH6, CH640, CH680, CH730, CS100-18E, CT154, CT2105, CTH126, CTH171, CTH174, CTH194, CTH200 Twin, CTH220 Twin, CTH2542, CV11, CV12.5, CV125, CV13, CV14, CV15, CV16, CV18, CV20, CV22, CV23, CV25, CV26, CV490, CV493, CV495, CV730, CV740, CV745, CV750, Cobra M46B, Cobra M46SPB, Cobra MM51B, Cobra MX46B, Cobra MX515SPBI, Cobra RM40SPB, Cobra RM46B, Cobra RM46SPBR, Cobra T40B, Cobra T60RB, Cobra WT56B, Conquest, Courage XT-7, Cub Cadet Volunteer, Cyclone, E2512523BVE, E2812523BVE, E281323BVE, E2813523BVE, E331416KVE, E331518KVE, E331520KVE, E331523KVE, E421613BVE, EF 105 J/18 H model, EF 106 J/18 H model, EF 124 J/22 H model, EF 72 C/12, EF 93 C/13, EFRP2167517BV, ELBC6152BV, ELBX10152BV, ELP216753BDV, ELP21702BV, ELP21703BDV, ELP21703BV, ELT125G331KV, ELT140H331KV, ELT140H33BBV, ELT140H33DBV, ELT140H411KV, ELT145H33GBV, ELT145H33HBV, ELT18540, ELT2044, ELT2250, EP2167517BV, EP217018BV, EP217019BV, ERP2167517BV, ERP217017BV, ERP217018BV, ERP217019BV, ERZT185440BVE, ERZT20441BVE2, ESZT18336BVE, EYZ15334BVE, EZT18542150ZBVE, EZT20501BV, Efco Jet AR 53 VBD, Efco Jet DR 52 VBR6, Efco Jet EF 105 J/15, Efco Jet EF 106 J/17, Efco Jet EF 63 C/6, Efco Jet MR 55 TBD, Efco Jet MR 55 TBI, Efco Jet MZ 2080 R, Efco Jet Tuareg 92, Efco Jet Zephyr 72H, FR2111/3/6, FR2213 MA, FR2216 A/A2, G35000, G55000, G56000, G62000, GB460, GTH260 Twin, Greenmech CS100, HDF900, Harrier 48, Harrier 48 Pro, Harrier 56, Harry 471 VFB, Heritage 13/30, Heritage RS14/82, Heritage ST38, Heritage ST42, Husqvarna 5524ST, Husqvarna CT126, Husqvarna CT151, Husqvarna CTH2036, Husqvarna DRT70, Husqvarna LC 53 e, Husqvarna LT126, Husqvarna LTH151, Husqvarna R 213C, Husqvarna R 215TX, Husqvarna R 216, Husqvarna Rider 111B, Husqvarna WC 48S e, Intek, LC 53B e, LC53BE, LM2153, LR2107 C, LR2107C, LT154, LT1597, LT2120, LTH154, Lawnflite BM87-35, Lawnflite T450, M10/30, M1030, M115-77, M11577, M125-97HB, M125-97HRB, M135-38, M13538, M155-107HRB, M175-38, M175-H38RB, M17538, M185-107HRB, M195-42H, M19542H, M220-42H, M22042H, M53-875DWA, MB655 VM, MB655 VR, MB655VM, MB655VR, MRT6, MX46SPB, Mountfield FS45TL, ONE102Y, ONE72Y, ONE72YH, ONE92Y, ONE92YH, Oleo-Mac LUX 53 TVI, One 102Y, One 102YH, One 122YH, One 72Y, One 72YH, One 92Y, One 92YH, Optima 46SPBHW, PB22H46YT, PB26H54YT, PBGT26H54, PO17542LT, PO18542LT, PRRT900, PT3V, Poulan 301ZX, Poulan DRT900, Poulan FT900, Poulan PB195H42LT, Poulan PB20H42YT, Poulan PB23H48YT, Poulan PO12530LT, Poulan PR8P27ES, Procut 560, R 216 AWD, R 422Ts AWD, RM46SPB, RS17/102H, RS17102H, RT900, Ranger 53, Rider 11C/R, ST38, ST42, SV710, SV715, SV810, SV820, SV830, SV840, Shibaura AM201, Shibaura MTS-400, Smart 53MSPB, Snapper 6016RT, Snapper Conquest, Snapper E251023BVE, Snapper E281123BVE, Snapper E331413KVE, Snapper E331415KVE, Snapper ECP21550V, Snapper EFRP216516BV, Snapper ELBC6151BV, Snapper ELBX10151BV, Snapper ELP216752BV, Snapper ELT125D331V, Snapper ELT140H22BBU, Snapper ELT140H33ABV, Snapper ELT145H33FBV, Snapper ELT150H33IBV, Snapper ELT160H422BV, Snapper ELT180H33IBV, Snapper ELT18538, Snapper ENXT22875, Snapper EP217017BV, Snapper ERDV19850HW, Snapper G30000, Snapper H1528E, Snapper H1730E, Snapper ICFR5505BV, Snapper L1226E, Snapper L824E, Snapper M1227E, Snapper M1529E, Snapper M924E, Snapper P2132E, Snapper PP71402KV, Snapper Prestige, Snapper RD2140, Snapper SS7522E, Snapper SS822EX, Snapper SS922EX, Snapper WLT170H38IBV, Snapper YT2344, T1000HD, T13-82HD, T1382HD, T15-102HD, T15-102HDS, T15-92HD, T15-92HDE, T1592HD, T18-102HDE, T20-102HD, T20-102HDE, T920HD, T920R, TR
Alternate Part Numbers:
BCPR5ES, RC12YC, RC14YC, FR8DC, FR9DC
Product Specifications
| L&S Part No. | OR77-303-1 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Oregon |
| OEM No. | 77-303-1 |
| Unit of Sale | 1 |
| Applications | 104700, 11.0HP CH11, 111B5, 115400 Series, 117400, 12.5HP CH12.5, 121600, 13.0HP CH13, 138400, 13C, 14.0HP CH440, 14.0HP CV14, 1450 Series, 15.0HP CH15, 15.0HP SV470, 16.0HP CH16, 16.0HP CV460, 16.0HP SV480, 16.5HP CV465, 161400, 16C/C AWD, 17.0HP CV17, 17.0HP SV530, 18.0HP CH18, 18.0HP SV540, 185400, 19.0HP SV590, 19mm Thread Reach), 20.0HP CH20, 20.0HP SV600, 21.0HP SV610, 22.0HP CH22, 22.0HP SV620, 23.0HP CH23, 23.0HP SV720, 24.0HP SV725, 25.0HP CH25, 25.0HP SV730, 26.0HP CH26, 26.0HP SV735, 27.0HP CH740, 27.0HP SV740, 28.0HP CH745, 28Q700, 28S700 Series, 294400, 294700 Series, 3.5HP 93400, 3.5HP XT-6, 30-15, 30-17, 30.0HP CH750, 3015, 3017, 303400, 303700 Series, 350400, 350700 Series, 351400, 351700 Series, 35HP93400, 380400, 380700, 380ZX, 386400, 386700 Series, 4.5HP XT-7, 460ZX, 461ZX, 4800BRV, 5 H model, 5 M model, 5.0HP CH5, 5200BRV, 540ZX, 541ZX, 550E, 550EX, 575EX Series, 6.0HP CH6, 7.0HP CH270, 7016RT, 750 Series, 750EX Series, 825, 850, 850E, 875 Series, 875EX Series, 9.5HP CH395, 900 Series, 950E, 99700, Agria 2500 Hydro, Agria 3000 F 1651 B, Agria 5900 Bison, Agria 800 MH 85, Al-Ko 4700BRV, Al-Ko MH5060, Al-Ko T13-82S, Al-Ko T18-102HD, Al-Ko T850R, Allett RM34, Alpina Crono 360G, Alpina One 63Y, Alpina One 98Y, Arborist 15-23, B&S Intek, Briggs & Stratton 1350, Briggs & Stratton 450E, Briggs & Stratton 500E, Briggs & Stratton 700, Briggs & Stratton 700E, Briggs & Stratton 800, Briggs & Stratton 800E, CH14, CH18, CH20, CH22, CH25, CH5, CH6, CH640, CH680, CH730, CS100-18E, CT154, CT2105, CTH126, CTH171, CTH174, CTH194, CTH200 Twin, CTH220 Twin, CTH2542, CV11, CV12.5, CV125, CV13, CV14, CV15, CV16, CV18, CV20, CV22, CV23, CV25, CV26, CV490, CV493, CV495, CV730, CV740, CV745, CV750, Cobra M46B, Cobra M46SPB, Cobra MM51B, Cobra MX46B, Cobra MX515SPBI, Cobra RM40SPB, Cobra RM46B, Cobra RM46SPBR, Cobra T40B, Cobra T60RB, Cobra WT56B, Conquest, Courage XT-7, Cub Cadet Volunteer, Cyclone, E2512523BVE, E2812523BVE, E281323BVE, E2813523BVE, E331416KVE, E331518KVE, E331520KVE, E331523KVE, E421613BVE, EF 105 J/18 H model, EF 106 J/18 H model, EF 124 J/22 H model, EF 72 C/12, EF 93 C/13, EFRP2167517BV, ELBC6152BV, ELBX10152BV, ELP216753BDV, ELP21702BV, ELP21703BDV, ELP21703BV, ELT125G331KV, ELT140H331KV, ELT140H33BBV, ELT140H33DBV, ELT140H411KV, ELT145H33GBV, ELT145H33HBV, ELT18540, ELT2044, ELT2250, EP2167517BV, EP217018BV, EP217019BV, ERP2167517BV, ERP217017BV, ERP217018BV, ERP217019BV, ERZT185440BVE, ERZT20441BVE2, ESZT18336BVE, EYZ15334BVE, EZT18542150ZBVE, EZT20501BV, Efco Jet AR 53 VBD, Efco Jet DR 52 VBR6, Efco Jet EF 105 J/15, Efco Jet EF 106 J/17, Efco Jet EF 63 C/6, Efco Jet MR 55 TBD, Efco Jet MR 55 TBI, Efco Jet MZ 2080 R, Efco Jet Tuareg 92, Efco Jet Zephyr 72H, FR2111/3/6, FR2213 MA, FR2216 A/A2, G35000, G55000, G56000, G62000, GB460, GTH260 Twin, Greenmech CS100, HDF900, Harrier 48, Harrier 48 Pro, Harrier 56, Harry 471 VFB, Heritage 13/30, Heritage RS14/82, Heritage ST38, Heritage ST42, Husqvarna 5524ST, Husqvarna CT126, Husqvarna CT151, Husqvarna CTH2036, Husqvarna DRT70, Husqvarna LC 53 e, Husqvarna LT126, Husqvarna LTH151, Husqvarna R 213C, Husqvarna R 215TX, Husqvarna R 216, Husqvarna Rider 111B, Husqvarna WC 48S e, Intek, LC 53B e, LC53BE, LM2153, LR2107 C, LR2107C, LT154, LT1597, LT2120, LTH154, Lawnflite BM87-35, Lawnflite T450, M10/30, M1030, M115-77, M11577, M125-97HB, M125-97HRB, M135-38, M13538, M155-107HRB, M175-38, M175-H38RB, M17538, M185-107HRB, M195-42H, M19542H, M220-42H, M22042H, M53-875DWA, MB655 VM, MB655 VR, MB655VM, MB655VR, MRT6, MX46SPB, Mountfield FS45TL, ONE102Y, ONE72Y, ONE72YH, ONE92Y, ONE92YH, Oleo-Mac LUX 53 TVI, One 102Y, One 102YH, One 122YH, One 72Y, One 72YH, One 92Y, One 92YH, Optima 46SPBHW, PB22H46YT, PB26H54YT, PBGT26H54, PO17542LT, PO18542LT, PRRT900, PT3V, Poulan 301ZX, Poulan DRT900, Poulan FT900, Poulan PB195H42LT, Poulan PB20H42YT, Poulan PB23H48YT, Poulan PO12530LT, Poulan PR8P27ES, Procut 560, R 216 AWD, R 422Ts AWD, RM46SPB, RS17/102H, RS17102H, RT900, Ranger 53, Rider 11C/R, ST38, ST42, SV710, SV715, SV810, SV820, SV830, SV840, Shibaura AM201, Shibaura MTS-400, Smart 53MSPB, Snapper 6016RT, Snapper Conquest, Snapper E251023BVE, Snapper E281123BVE, Snapper E331413KVE, Snapper E331415KVE, Snapper ECP21550V, Snapper EFRP216516BV, Snapper ELBC6151BV, Snapper ELBX10151BV, Snapper ELP216752BV, Snapper ELT125D331V, Snapper ELT140H22BBU, Snapper ELT140H33ABV, Snapper ELT145H33FBV, Snapper ELT150H33IBV, Snapper ELT160H422BV, Snapper ELT180H33IBV, Snapper ELT18538, Snapper ENXT22875, Snapper EP217017BV, Snapper ERDV19850HW, Snapper G30000, Snapper H1528E, Snapper H1730E, Snapper ICFR5505BV, Snapper L1226E, Snapper L824E, Snapper M1227E, Snapper M1529E, Snapper M924E, Snapper P2132E, Snapper PP71402KV, Snapper Prestige, Snapper RD2140, Snapper SS7522E, Snapper SS822EX, Snapper SS922EX, Snapper WLT170H38IBV, Snapper YT2344, T1000HD, T13-82HD, T1382HD, T15-102HD, T15-102HDS, T15-92HD, T15-92HDE, T1592HD, T18-102HDE, T20-102HD, T20-102HDE, T920HD, T920R, TR7, Taifun, Tuareg 92 4x4, Vanguard, Viking GB370 S, Viking HB585, Viking MB655 G, Weed Eater ONE, XT8, XT800, XTR-7, XTR7, YTH200 Twin, YTH220 Twin |
| Machine Type | Engines, Tractors, Mowers |
| Fits Brands | Oregon |
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